Signaling Message Routing Node for Mobile Subscriber Location Register Fault Recovery
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Solution Overview
Problem
Mobile subscriber location registers in communications networks face challenges during fault recovery, as they may not be able to retrieve location information from nodes outside their home network, leading to incomplete reconstruction of location data for roaming subscribers.
Innovation Solution
A signaling message routing node with a fault recovery module stores and extracts mobile subscriber location information, enabling it to respond to a recovering location register with relevant data, including information about roaming subscribers and their serving nodes, thereby facilitating enhanced fault recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mobile subscriber location register sends reset messages only to nodes within its home network during recovery, then the recovery process is simple and fast, but location information for roaming subscribers cannot be retrieved
Solution Approach 1:
A signaling message routing node is introduced as an intermediary between the mobile subscriber location register and foreign network nodes. This mediator receives reset related messages from the recovering register, extracts subscriber information, determines foreign nodes, and forwards messages appropriately, thereby enabling complete location information retrieval without requiring the register to directly communicate with all possible foreign nodes
Solution Approach 2:
The recovery message routing function is segmented into distinct components: message reception at the routing node, information extraction from the message, foreign node determination based on stored location information, and selective forwarding to appropriate nodes. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability
2Reliability
If the mobile subscriber location register contacts all possible foreign nodes during recovery, then complete location information can be retrieved, but the recovery process becomes time-consuming and resource-intensive
Solution Approach 1:
The signaling message routing node stores mobile subscriber location information in advance, including associations between subscribers and their serving foreign nodes. When a reset related message is received during recovery, the node extracts subscriber information and uses the pre-stored location information to immediately determine which foreign nodes to contact, eliminating the need for time-consuming discovery processes during actual recovery
Solution Approach 2:
The system implements feedback through the routing node, which continuously monitors and updates subscriber location information from incoming signaling messages. This feedback mechanism ensures that the routing node has current location information available, enabling it to quickly and accurately route recovery messages to the correct foreign nodes without exhaustive searching
Data Source
AI summary
Methods, systems, and computer readable media for providing enhanced mobile subscriber location register fault recovery are disclosed. According to one method, the method occurs at a signaling message routing node. The method includes storing, in a memory, mobile subscriber location information. The method also includes receiving a reset related message associated with a mobile subscriber from a recovering mobile subscriber location register. The method further includes extracting, from the memory, mobile subscriber location information and responding to the recovering mobile subscriber location register with the mobile subscriber location information.